US8023734B2 - 3D general lesion segmentation in CT - Google Patents
3D general lesion segmentation in CT Download PDFInfo
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- US8023734B2 US8023734B2 US12/128,676 US12867608A US8023734B2 US 8023734 B2 US8023734 B2 US 8023734B2 US 12867608 A US12867608 A US 12867608A US 8023734 B2 US8023734 B2 US 8023734B2
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B6/46—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with special arrangements for interfacing with the operator or the patient
- A61B6/461—Displaying means of special interest
- A61B6/466—Displaying means of special interest adapted to display 3D data
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Abstract
Description
F m(i,j)=min {F m(x,y), f(i,j)},
F M(i,j)=max {F M(x,y),f(i,j)},
C(i,j)=F M(i,j)−F M(i,j)
wherein f(i, j) is the gray level at pixel (i, j). This cost function favors paths that do not vary too much in gray level and therefore stay within one homogeneous region. Heterogeneous regions can still be recovered when each seed point on the stroke builds its own homogeneous region which, when all put together form a larger heterogeneous region.
to emphasize the difference between the pixels inside the lesion, which respond well to the lesion histogram and have low cost, and the pixels outside the lesion.
3D Segmentation
wherein VA is the automatically segmented volume, and VGT is the ground truth volume. The volume overlap reflects the relative position of the two objects better and is defined as
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/128,676 US8023734B2 (en) | 2007-10-10 | 2008-05-29 | 3D general lesion segmentation in CT |
DE102008046859A DE102008046859B4 (en) | 2007-10-10 | 2008-09-12 | 3D segmentation of general lesion in CT |
Applications Claiming Priority (2)
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---|---|---|---|
US97881807P | 2007-10-10 | 2007-10-10 | |
US12/128,676 US8023734B2 (en) | 2007-10-10 | 2008-05-29 | 3D general lesion segmentation in CT |
Publications (2)
Publication Number | Publication Date |
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US20090097727A1 US20090097727A1 (en) | 2009-04-16 |
US8023734B2 true US8023734B2 (en) | 2011-09-20 |
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US12/128,676 Active 2030-04-19 US8023734B2 (en) | 2007-10-10 | 2008-05-29 | 3D general lesion segmentation in CT |
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DE (1) | DE102008046859B4 (en) |
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